Reboot the computer and open the system’s BIOS menu. This can usually be done by pressing the delete key, the F1 key or Alt and F4 keys or ThinkAdvantage Blue key + F1 or depending on the system.

Note: Many of the steps below may vary depending on your motherboard, processor type, chipset and OEM. Refer to your system’s accompanying documentation for the correct information on configuring your system.

Open the Security Tab and select Virtualization in the submenu.Enable Intel Virtualization Technology (also known as Intel VT-x) and AMD-V extensions.Select Save & Exit.Reboot the machine.

c) Install Virtual PC

Run the downloaded setup and follow the instructions as on the wizard.

d) Installing Ubuntu as a Virtual Machine

Create a new Virtual machine using Machine>New menu option and follow the on screen wizard.

Once the VM for Ubuntu is created, Start the VM and select the Downloaded Ubuntu ISO when prompt

For some reason, VirtualBox Host-Only Network Interface created in Windows must be disabled. To disable, Open Control Panel\Network and Internet\Network Connections in Windows and disable “VirtualBox Host-Only Network” (Right click and select Disable option)